Signaling apparatus.



N0.' s47,157. PATBNTED-MAR.12, 1907.

H. G. BROWN & B. DE M. MALAN.

SIGNALING APPARATUS.

APPLIUATION FILED LPR.4,1905'.

3 SHEIZTB-BHBHT 11 Iii:-

PATENTED MAR. 12,19071 H. G. BROWN & E. DE M. MALAN. j

SIGNALING APPARATUS.

APPLIGATION FILED 12.4, 1905.

6 3 SHEETS-SHEET 2.

I N0: 847,157. PATENTBD MAR. 121907.

H. G. BROWN 8: E. DE M. MALAN. SIGNALING APPARATUS.

APPLIUATION FILED APR. 4,1905.

UNiTnn STATES: P 111 oFFIoE.

HAROLD GILBERT BROWN, OF WE T EALINQLONDON, ANl) ERNEST- DE MERINDQLMALAN, OF HIGHGATE, LONDON ENGLAND, ASSIGNORS OF ONE-THIRD TO JAMESHENRY NEAL, OF 'BOSTON, MASSACHUSETTS.

- SIGNALING APPARATUS.

Specification of Letters Patent.

mated March 2, 1907. a

{replication filed Apr-i1 1, 1905. Serial No. 253,349.

' To (LZZ whom it may concern.-

,America, and ERNEST DE M 'lnrNnon MALAN,

a subject of the King of England, residing, respectively, at West Ealingand Highgate, London, En land, have invented certain new and usefulmprovement's in or Relating to Signaling Apparatus, of which thefollowing This invention relates to "signaling apparatus, and hasparticular reference to mechanism applicable, among other analogoususes,

. for signaling the description of a train fromone s1gnal-cabin toanother.

. The primary object of the invention, which is hereinafter describedwith particular reference to railway signaling,- but only forconvenience of description and by 'way of example. and not by way oflimitation, is the construction of-what may be termed a magazine-reoeiver"-that is, an instrument'which .can receive, store, and exhibitin the samefl sequence and-individuality as that-in which they weredespatched successive signals relating to a number of trains; Theexhibition of the signals is preferably, though notnccessarily, broughtabout by meansof an annunciator wor 'ng' in combination with themagazine-receiver and announcing the stored signals .in the samesuccession as that in which they were primarilfidespatched. In itsessential features signaling appa ratus according to this inventioncomprises a frame, successively-disposed groups of indicating membersthereon, and means operating on the groups in succession and selectively.on the indicating 'me'mbers ofeach ,group.

The annunciator when employed is provided with sections adapted tocooperate with the indicating members ofeach group, and relative motionis produced by any convenient means between. the groups of indicating.members and the annunciator-sectionsQ The a paratus is preferably,though not necessari y, operated electrically and is so (lescribe'd-inthis specification.

A sending instrument or transmitter 0f any convenient type is, accordingto the present'invention, combined with the magazinereceiver aforesaidand controls a number of circuitsin the magazine-receiver, WlllGh invarious combinations represent the train descriptions. The particularcombination standing for a given description may be setively to fixedcontacts in-the transmitter.

For example, with four circuitsthat is, four 4 ative positions, eachposition being labeled with a distinct train description.

The magazine-receiver is. provided with movable members preferably inthe form of plungers which are arranged in groups or rows, the number ofmembers in each group corresponding to the numberof circuits, so thatinthe example above taken there would be four movable plungei's in eachgroup. Electromagneti'c selective mechanism connected with; thetransmitter circuits is arranged in the magazine-receiver, so that onthe receipt of a signal the plungers in one row are moved relatively totheir sup ortingframe'to correspond with the particul arcomhination ofcircuits selected by the transmitter. Relative motion can take placebetween the magazine-receiver frame and the electromagnetic mechanism,and preferably the frame is shifted step by step relatively to the fixedelectromagnetic 'mechanism as each signal is received, so that eachgroup of plun g'ers is brought in turn into cooperative position withregard to,the electromagnetic mechanism. Thus, for example, it fivedifferent signals are sent in succession they will be represented byfive groups of plungers} one or more of the pl ngers in each preferablyeach plun er whenshi ted by the electromagneticmec anism=is arranged toclos'e'either immediately or subsequently anelectric circuit whichoperates either alone or in conjunction with the other circu ts closedby the plungers in the same row to give a visible signal on anannunciator.

The annunciator is provided with sections adapted to cooperate'withtlieplungers and having contacts closed by the p ungers y when 5'5 lected,say, by a commutator moving relap being moved relatively to the frame inaccordance with the signal.

- I the latter are set in theirsignaling positions. These sections andcontacts are conveniently carried upon a movable support forming part ofthe magazine-receiver and set initially 'so that the contacts. are injuxtaposition with the-group of plun'gers that isto be operated by thefirst-received signal. This support moves with the frame as signals arereceived and stored, but is moved step by step relatively to the framewhen the received signals I are sent onward from the magazine-receiver.Thus, supposing station A sends three train descriptions to station B,'so' long as B does not communicate any'of these descriptions I tion.

to C the support carrying the annunciatoroontacts'in bs receiver doesnot move relatively to the frame, but moves with the frame,- thatbrought the plungers 'for these descriptions group by j group into.cooperation with the setting electromagnetic mechanism. As soon,however, as B transmit-s to C the first signal he has received from Athe support carrying B's armunciator-contacts' is moved one steprelativeiy to the frame and in a direction opposite to that in whichitmoved with the frame. This movement brings the annunciator-contactscarried by the support into connection with-the next row ofpreviously-set plungers, so .thatthe' next stored signal is announced"at Bs' station. The same relative movement of the support and the framemay be utilized to'restore the pre- Conveniently the niotion of themagazinereceiver frame is brought about by a step-bystep mechanismoperated by a weight and controlled by an electromagnet, the circuit ofwhich is closed by the transmitter at the sending station. nicated to'the annunciatr-contact-carrying support through a .pawl andratchet-wheel, and when as above described it is necessary for thesupport t'omove in the contrary direction relatively to the frame, thispawl and ratchet-wheel,'which are controlled by a separateelectromagnet, act as ,a step bystep esca enient and allow the requiredinde-- pen en'tmotion to be imparted tothe sup-' port by means of, say,a weighted cord.

In the accompanying drawings, Figs. 1,

I 1, 1, and 1 are-four views illustrating 'of the movableplungers.

tion of part of the transmitting ap aratus. taken at rightangles to theviewin ig.-1,. and Fig. 5 is a dia diagrammatically: one construction ofsignaling apparatus according. to this invention.

Fig. 2 is an, elevation of a portion 'of the magazine-receiver. tail andon a larger scale'the construction Fig. 4 is an eleva=transmitting-contacts.

With'reference first to ram showing trainecarried four conducting-ringsA'-. A,'A and A, at-

ceding row of plungersto their normal'posi- This movement is commu- Fig.3 illustrates in de-' Fig. 1,-A is a transmitteFdisk, of insulatingmaterial, having tached to one side of it. These rings are permanentcontactwith springs B, B B and B, and portions of the rings'project.through the insulatlng-disk A, forming segmental conductors, whichaccording to the position of the disk make electrical connection withother contact-springs C C C C. The four contactsenable fifteen distinctsignaling combinations to be used, and the disk A is provided withnotches A and numbers carried upon a fixed support A and visible throughholes in the disk, so that the disk, I

which is"rotatable,'may be readily placed in the right position to'give.any desired combination. Working in conjunction withthe transmitter-diskis a switch-lever D connected through a spring D ith a pivoted arm D,havinga proiection D which entersis closed'l. e., is "brought into 0nnection with.contact-springs D. As wi be seen from Fig. 1*, when thisswitch is closed the springs B B B B, and consequently the rings A A AA, are brought into electrical connection with a transmitter-b attery E,one

one of thenotches A when the switch-lever pole of. which is permanentlyconnected to one 'of the switchscontacts D A pointer F on thetransmitter turns with the disk A and indicates by its positiorif'whichof the fifteen combinations will be selected when the switch is. closed.As will be seen by reference to the other view of the switch-lever,(shown in Fig. 4 'of the drawings,) the notches A are beveleda-t oneside, so that should the setting of the disk not'be quite accurate theprojection-D may nevertheless enter when the switch isclosed andwillthen itself bring about'the final adjustment of the disk A; A

' The magazine rece'iver is shown in Fig; 1 in longitudinal verticalsection and in Fig. 1

in elevation looking in thedirection .of the arrow 1, Fig. 1*, -Itcomprisesa frame in the form of a drum G, rotatably mounted, by means ofa long bearing G, upon a shaft G", supported u on "standards G Round theperiphery o this frame are a number of groups of indicating members inthe form of -plungers H, four in a'group, and arranged so 4 that theycan'slide radially in and out of the frame G. The detailsof-construction of ger has been-pushed in. The function of .t-his catchH 1s, as will be hereinafter described, to retain the plunger H in itsinward position against the action of a spring Huntil the signal reresented y the plunger has been announcer and canceled, i The movementof the plungers H rela-I tively to the frame G is brought about byelevation in Fig. 2.)

--port for spring-controlled plungers K, which gers K outward, andFfelectromagnets 1,1, I, and P, which are fixed beneath theira'me G andare provided with pivoted armatures I, which when .the electromagnetsare energized are lifted up by plungers 1? and caused to push in theplunge'rs H, which are opposite to them. 'lhese electromagnets I I l Iare joined,respec tively, to the contacts CO O O by the conductors a, b,c, and d.

Mountedlupon asleev'e J on the shaft G is a segment-shaped member K.(Shown in This'ser'ves as a supcooperate with annunciator contacts Kalso carried upon the support K. 'The springs K normal-1y press thecontact-plunas will be seen from the sectional view of he receiver inFig. .1 there is a space between the-'plungers K and the inner ends ofthe indicat-ing-plungers 1'1 when the latter are in theirnorm-alposition that is to say, when they are not depressed against the actionof the springs H When one of the plungers' H is pushed inward, as shownat the to left-hand portion of' the sectional view 0' themagazine-receiver, its inner end comes into contact with thecorresponding plunger K, "and the plunger- H being retained," aspreviously mentioned by the catch H t e a'nnunciatorplunger K isdepressed against the action of i its spring K .andthe Contact K isclosed,

nunciatqr, and the plungers, with their con .com'pleting a-circui't inan annunciator,.hereinafter described.

Although the support K, with its plungers and contacts, is structurallypart of the receiver, it is functionally a portion of the an' ta'cts,are to be regarded as sections of. the

. annunciator'.

The support K is provided with a ratchetwheelL, and apallet M,.pivoted,as at M, to a'portion of the side of the frame G, bears two pawls Mand,M-"', which form an escapement controlling the motion of the wheel-Land the support K relatively to frame G and also constitute means forlocking the support vices I l I I to the frame G when they are requiredto move together relatively to the selective de- The pallet M is joinedby a link M to a lever M forming the armature of an electrom'agnet 'N,mounted: upon the side, of the frame G. This lever M is pivoted totheside of the frame, as at M, and its free 'end'is controlled by aspring M", which tends to keep the armature end of the lever M raised,as shown inelevation in Fig. 1, thus causing the pawl M to keep inengagement with the teeth of the. ratchetwheel L. Thus it will be seenthat with the mechanism in this position the frame G and theannunciator' section support are locked and" would rotate together ifthe frame were driven in the direction of the a stop-pin O and iscontrolled by and I.

arrow 2 in Fi 1 Motion of the frame in this direction is -necessary tobring the groups of plungers H successively into cooperation with theselective elctroniagnets 'I I I I and is brought about in the followingway: The frame G is providedwith pins G, corresponding in number to therows of plungers H. Engaging with these pinsis a pawl O, pivotedto aweighted rod 0, slidin .in vertical guides O. This pawl is provi ed witha spring O. To the weighted rod'O is connected oneend of a lever Opivoted, as at O,and bearing at its other end the armature of anelectromag-; net 0 One end of the winding of this electroinagnet O isjoined by a conductor e to all the electromagnets I I I I and the otherend is joined to the battery E, so that theelectromagnet Oisenergized'whenever the switch D is closed, and'the consequent movementof the armature-lever O raises the weightedrod O, causing the pawl O toslip over one of the pins G. On the opening of the sending-circuitthearmature-lever O is released, the weighted rod O descends, and the pawl0, now kept rigid by its stop 0 bearing against'the rod, engages withthe pin G directly beneath it and drives the frame Gin the direction ofthe arrow 2, thus bringing the next set of. plungers H over thearinature I ready for selective setting. To limit the movement of the frame Gtwo pawls are provided. One, P, near." the top 'of' the frame, iscontrolled by a spring P and prevents any motio of the frame-in adirection opposite to that-of the arrow 2. P near. the lower portion ofthe frame, is

The other,

controlled by a spring P and forms part of lever, theother end of whichrests againsta stop 0 on the rod O. Normally'i,

when the electromagnet O is not energizedthis pawl P controlled by itsspring P occupies the positionshown in dotted lines in Fig. 1 andprevents any rotation of the frame Gin the direction of the arrow 2;'but when the rod 0 is raised, as previously de scribed, the stop-pin 0causes the pawl P to move down out of engagement .with the. pin

'G, ,as shown in fulllines in the drawings.

As the rod 0 descends the pawl P risesand ultimately engages with thenext pinG, so that the rotation of the frame is li r nited to an amountequal to the distance between two adjacent pins G. It is tobeunders'tood' that as far as this part of the invention is concernedthe essential feature is the production of relative motion between thegroups of indicating members and the selective mechanism-43. e., betweenthe groups of pluners H and the electromagnetsI, I, I, and. I 11 theconstruction shown in the drawings this is accomplished, as described,by causing the frame G carrvin the plungers to rotate relativelyto theiixe electromagnets I, I, I,

As previously mentioned, the pawl M by 1 When, however, the signals areto be passed its engagement with the teeth of the ratchet wheel L locksthe support K to the frame Gr, so that the support moves with the framein the direction of the arrow 2. a

For certain functions hereinafter more fully described it is necessaryfor the support K to move relatively to'the frame G. This independentmovementof the support K the sleeve J. The electroma gnet X when to theother.

' engagementtakes place the weight shifts the wheel in the direction-ofthe arrow 3 slightly. The movement, however, is limited by the pawl M",which has now been brought down into the path of the teeth. On therelease of 4 the armature of the electromagnet N the pawl M descendsagain and comes into engagement with the next tooth, so that the onecomplete movement of the-lever M down and up again allows the support.-K to rotate under the influence of the weighted cord R for an amountequal to one tooth-of the ratchet-wheel L. The number of teeth is equalto the number of ins G that is, to

the number of rowsof p ungers H.- Therefore the result of thisindependent movement of the support K is to bring theannunciatorplunger-s K, carried by the support, into opera-tive positionfrom'one row of plungers H H It will be seen on reference to Fig. 2 andto the sectional view of the magazine-receiver in, Fig. 1 that thesupport K carries in br'ack-' ets K 'four fingers or wipers K Thesefingers are in the path of the tails of the catches frame K is broughtabout from a battery E,

which is joined through a key S at the receivmg-stationto slip-rings SThese rings are'mounted upon a suitable support on the sleeve G and areconnectedto the ends of the winding of the elect-romagnet M In thedrawing the key Sis shown as a simple key and may be termed anannouncing and canceling key, as its function is to bring about therotation of the support 'K, and consequently the announcement and'cancellation in succession of the indications previously given at thereceiving-station.

orat the same time as the closing of thetransmitter-switch D, so thatthe transmission of a previously-received signal from one receivingstation to the next would auto receiving-station and also cause theindication at that station of the next stored signal.

As reviousl mentioned the positions .of the p lingers relatively to theframe G tionisrequired the plungers K and contacts ent rotation of thesupportK used simp y for cancellation. have a separateannunciator-working in conjunction with the plungers K and contacts Kand the annunciating arrangements will now be described.

Mounted upon the sleeve J are five sliprings T T T T T. T-he ring T isjoined by a conductor f to the lower contact of all the four contactkeys Ki, while the rings T T T T are joined severally to the uppercontacts of those keys. Rubbing-contacts '1 are provided for all therings, and the ring T is connected to a battery E, the other pole ofwhich avindings of fourelectromagnets U"U? U U.

tromagnets are joined by conductors 71 'i, j,

with the rings'T, T T and T4, respectively.

\an armature bearing a rod niadeupof conducting and insulating parts;These rods are shown diagrammatically in Fig. l and are lettered U U, U,.and U respectivel the insulating portions ofeach rod being indicatedby the dark portions of the diagram. Adjacent to each rodare,rubbing-contacts hing-contacts joined to conductors markedwith thenumbers 1 to L5, respectively, each of these conductors being joinedbearing. a corresponding number. These electromagnets are joined,through a battery E to a. common return-conductor Z, connected to therubbing-contact U in connection with the rod U It will be noticed thateach of the rods U U, U and U is provided with a conducting makescontact with the particular conductorh i j k belonging to the. magnetcircuit. through adjacent contact-pieces U These contactpieces, areshunted by resistances U, and theobject of the arrangement is to avoidwaste of energy, so that a arge currentmay' be allowed to pass through;for ex'ample,the'

on from one receiving-station to another, the circuit of the battery Ewould be closed by themselves indicate the signal sent from the.transmitting-station, and if no other indica- K maybe dispensed'with andthe inde end-- and k to the rubbing-contacts in connection U", and therod U is provided with fifteen rubmatically cancel the indication at thefirst i It is, however, preferred to is joined by a conductor g to one'pole of the The other ends of the windings of these elec- LOO Each ofthe electromagnets U U U H has to a separate annunciator electromagnetportion near its extremity, which when the- 1 armature is.-down ,thatwis,-'unattracted. I

' ro'd 'U up the direct circuit is broken at U their respectiveconductors.

and the diminished current passing through the resistance U serves, toretain the armature in its raised position.

The operation of the a paratus is as fol lows: The transmitter-dish A isfirst turned until the pointer F,which moves with it, points to thenumber indicating the si nal required. For example, in the drawing thepointer indicates the numbr 13. In this position'it will be seen that tcontact-springs C and C are in contact wi the conductingsegments of therings A and A and that the ot er two springs C and C are not against Theswitch D is now momentarily closed, and conseuently current from thebattery E flows t rough the conductors a and c to the electroma nets Iand I, respectively. The armatures of these magnets are consequentlyraised and operate against the plungers H adjacent to them, which areshown in the sectional view of the receiverin Fig. 1 pressed inward bythe armatures I. At the same time the electromagnet O, which is inseries with the electroma netsI I I I, is energized and lifts the rod,ready to shift on the frame G when it descends, a motion which takesplace immediatelyafter the current ceases to flow through theelectromagnet 0. As will be understood from the previous description,the displaced plungers H in due course cooperate with theannunciator-plungers K, carried on the support K,

and for clearness of description it is conven-J ient now to consider theupper portion of the receiver shown in section in Eigxl fof'the"drawings, where two of the plungers H,

which have been ,through some previous signal,'operated by thearma'tures of the electroma nets I- and I, are shown in cooperation withtheir respective annunciatorplungers K. These, it willbe seen,aredepressed, and consequently their spring-contacts K are closed.'Cur'rent therefore passes from the battery E through the ring T to theconelectromagnet U back to the battery E 'ductor f, where the circuitdivides, part of'the current going through one contact K to the rlng Tand thence by the conductor h to the while the other part flows throughanother contact K the ring T, conductor i, and electromagnet U back tothe battery. Thus the magnets U U are energized and, as

shown in the diagram, attract their respective armature-rods U U. Theresult of this movement may be seen from that part of the diagramrelating to the annuriciator. Current from-the battery-111?v flowsthroughith-e passing through the conducting portion of t e four rods LIU U U", out by the rubbing. contact into conductor 3, whence it'passesround the annunciator-magnet 3, which therefore attracts its armature,and back to the battery E". It will be readily seen that any of theother fourteen combinations could be effected in a similar manner.Suppose now the receiving-stationwishes to. cancel the signal justannounced. The key S is closed, the

electromagnot N energized'from the battery E, and the support K rotated.The movement of the support'K withdraws the annunciator-plungers K fromcooperation with the previous set, of plungers H, and consequentl thecontacts K previously closed are opene the electromagnets U U?deenergized, and the annunciaton-armature 3 allowed to drop.

The same movement, however, will bring the annunc1ator-plu'ngers K intocooperation with the next set of plungers H, and should any of these bedepressedthat is to say, should another signal have been storedsome oneor more of the plungers K will be depressed-and another annunciati'onmade.

As previously mentioned, the 1plungers H are mechanically replacedthroug the action of the wiper-fingers K which by the motionof thesupport K are brou ht into contact with the retaining-catches.

The number of groups of plungers H on the receiver-frame G should alwaysexceed the capacity of the line between the receivingstation and thesending-station, so that the support K is never required to make a com-,

plete revolution relatively to the frame. The' weighted cord R,operating thesupport K,

will then never require winding, for the 4 amount of cordlunwound byeach independent movement of the frame for annuncia tion orcancellationis rewound by the move ment in the'opposite direction produced by eachdescription.

It will be, ppreciated that the essential feature neces ry for thesuccessiveannunciation of previously-stored signals is that relativemotion should be'produced between the annunciator-sections and theindicating mem- Fursectionsthat is to sav, to the support K I by eitherof thetwo parts that coo erate in the relative movement between t eframe and the selective device. Thusin the construction illustrated theweighted cord is rnay be employed, and it may be wound up wound up bythe frame G movin relatively a construction where the frame isstationarj the movement of the selective device can be to theelectromagnets I, I, I, an I; but

utiliied to. wind up the weighted cord or otherwise store energyafterward used for causing the independent movement of theannunciatcr-secticns.

' transmitting apparatus.

It is within the present invention to employ upon a train adjustablecontacts capa le of transmitting impulses to the receivingstatiun inlike manne and in like order to that in which they are iransmitt'ed, asabove described, by manual movementof' the Fig. of the drawingsillustrates diagrammatically such an arrangement. Contacts IV are. lacedon .the road-bed and cooperate with rushes or spring-contacts X, whichare carried by the train and are under the control of the driver; Inlike :manner the circuitof the battery E may be closed automatically byatrain instead of being manually operated, and in this case atrainpassing a given point would by operating a treadle or in any otherwellknown way cause the rotation of the support K, and consequentlybring about the can- 'cellation of one description and the an'nunciationof'the descri tion next-in order;

The details of t e construction of-the va' rious parts of the apparatusmay be altered;

without departing from the spirit of this inive devices a and vention. i

Although, as "aforesaid, this invention is described with reference tothe transmission, storage, and repetition of signals to indicatedescriptions or route of successive railway trams, 1t 1s apphcable withequal advantage to' the-transmission, storage, and repetition of otherseries of signals or records.

hat We claim as our invention and de-' sire to secure by Letters Patent,3 1. In signaling apparatus the combination with a transmitter of amagazine-receiver mitted signals in the same sequence and individu'alityas that in which they were primarily despatched. v

2. In signaling apparatus the combination of a frame,successively-disposed groups of indicating members thereon, andfmeanso'peratlng on the groups 1n SHOOGSSIOII and see lectively on theindicating.- members of each group.-

3. In signaling appara tus the combination of a frame,successively-disposed groups of indicating members thereon, means foroperating selectlvely uponthe indicatin 'members of each group and meanswhereby rela' I tive motion is fproduced between the selecta the groupsof indicating m s ,1 -1- 4. In signaling apparatus the combination of aframe, successively dis osed groups of indicating members in a circ ethereon, a device foracting selectively upon the indicat ing members ofeach group, -and means'to produce relative circular motion between theframe and the selectivedevice.

an annunciator that exhibits the transtion is produced-between theselective devices and the groups of indicating members.

7. In slgnahng apparatus the combination of a frame,successivelydisposed groups of indicating members thereon, stationary.electromagnetic devices for operating selectively upon the indicatingmembers of each group, and electromagnetic mechanism by which the frameis rotated to produce relative motion between the selective devices andthe groups of indicating members.

of a, frame, success vely-disposed groups of indicating members thereon,traveling electromagnetic devices for'o era-ting selectively upon-theindicating mem ers of each group, andelectromagnetic mechanism by whichthe said devices are .m'ade to, travel to pro device and the groups ofindicating members.

9; In signaling apparatus the combination of a'frame,sucessively-dispbsedgroups of indicating mem Y rs thereon, nieansoperating on the groups in succession and selectively on the indicatingmembers of each group, an annuneiator having. sections adaptof eachgroup, and means by which relative dicati'ng members, and theannunciator-sections.

10. In signaling tion ofa frame, successivelj disposed groups of'indicating members thereon, stationary electromagnetic devicesforoperating selectively 'up'onrthe indicating members of each grouelectromagnetic mechanism by which the -fi 'ame is rotated to. producerelative motion between the selective device and the grou s ofindicating members, an annunciator iaving' sections ada ted to cooperateand means to move. the annunciatonsections from group to group of bers.,

11. In signaling apparatus the combination of a framesuccessively-disposed groups of indicating member's thereon. meansoperively on the int icating members of each group,.andn1eans forthereafter operating on i the groups to-restore theindicating members ito their normal condition.

magnetic mechanism by who relative mo- 8. In signaling apparatus thecombin'ation duce' relative motion between the selective ed to cooperatewith the indicating members motion is produced between the groups ofin-' apparatus the combina- I with the indicating mem ers'of each group,i

the indicating mem-,

ating on the grou s in succession and select- "12. In signalingapparatus the combinetion of a frame, successively-disposed'grou ps ofindicating members thereon, stationary electromagnetic devices'foroperating selectively upon the indicating 'membersof each group,electromagnetic mechanism by which I the frame is rotated to producerelative moalotion between the selective device and the groups ofindicating members, and means for restoring the indicating members totheir normal condition. a

13. In signaling apparatus the combination of a frame,successively-disposed groups of,indicating members thereon, stationaryelectromagnetic devices-for moving selectively the indicating members ofeachgroup in relation to the frame, electromagnetic mechanism by whichthe frame is rotated to produce relative motion between the selectivedevice and theg'roups of indicating members, and means. for replacingthe members relatively to the frame. f

1-4; In signaling apparatus the combination of a frame,successively-disposed groups.

of loaded'indicating members thereon, means a for moving selectively theindicating mem bers of,each group'in relation to the frame, sring-operated catches .for retaining 'the in? icating members in theirselected positions and means for disengaging the catches from themembers to permit them to return to 1 their normal position.

, 15. In 'signaling apparatus the combination of a frame,successively-disposed groups "of indicating members thereon, means foroperating selectively upon the indicating members 0 each group andweight-actuated electromagnetically-controlled step-by-stepdriv ingmechanism whereby relative motion is prerluced' between the selectivedevices and the groups of indicating members.

16. In signaling apparatus the combination of a frame,successively-disposed groups of indicating members there'on, means operating on the grou s in succession and selectively on the in icatingmembers ofreach' group, an annunciator having sectionsadapted tocooperate with the indicatingmembers of each grou weight-actuatedmechanism by which re ative motion is produced between the groups ofindicating members. and

the annunciator-sections and an electromagneticescapement forcontrolling such mo tion.'

17-. In signaling apparatus the combination of a frame,successively-disposed groups ofindicatingmembersi"thereon, meansoperating on thegrou s in succession and selectively. ;on the in icatingmembers of each group, weight-actuated electromagnetically= controlledstep-by-fstep driving mechanism whereby relative motion is producedbetween the selective 'devices and the-groups of indicating members, anannunciator having sections adapted to cooperate with the indicatingmembers of each group, weightactuat'ed mechanism by which relativemotion is produced between the groups of indi cating members and theannunciator-sections and anelectromagnetic escapement for controllingsuch motion.

18 In signaling apparatus the combination of a frame,successively-disposed groups of indicating members thereon, stationaryelectromagnetic devices for operating selectivelyupon the indicatingmembers of each group, weightractuated electromagneticallycontrolledstep-by-step driving mechanism by which the frame ISIOlDflbBCl toproduce relativemotion between theselective devices and the groups ofindicating members, an annunciator having sections adapted to cooperatewith the indicating members of each group, weight-actuated mechanism bywhich relative motion is produced between the groups of indicatingmembers and the annunciator-sections and an electromagnetic escapementfor controlling such motion.

.19. In signaling apparatus the combination of a frame,successively-disposed groups of indicating members in a circle thereon,a device for acting selectively upon the indicating members of eachgroup,.an annunciator having sections adapted to cooperate with t'heindicating members of each group, means to produce-reiative circularmotion between the frame and the selective device, means for lockingtogether and unlocking the frame and the annunciator-sections and meansby which relative angular motion can be produced 'betwe the groups ofindicating members and he annunciator-sections,

- .20. In signaling apparatus the combination of a frame,successively-disposed groups of indicating members in ,a circlethereon,,a device for acting selectively upon the indicating members ofeach group, an annunciator having sections adapted to cooperate with theindicating members of each group, means to produce relative circularmotion between the frame and the selective device, means for lockingtogether and unlockingthe frame and the annunciator-sections and atension driving device operatively connected with theannunciator-sections and wound up by one of the two arts thatcooperatein the production-of tiie relative circular motion aforesaid.

21.- In [signaling apparatus the combination of a frame,successively-disposed groups of indicating members thereon, stationaryelectromagnetic devices for operating selectively upon the indicatingmembers of eachv group, an annunciator having sections adapted tocooperate with the indicating members of each group, driving mechanismby which the frame is rotated to produce relative mo-' tion between theselective devices and the groups of indicating members, a support forthe annunciator-sections, ratchet-teeth on pawl from the ratchet-teethto allow such I of each group,

group, an annunciator havin 'mechanism by such support, aspring-controlled pawl pi'voted to the frame and engaging withsaid teethwhen the frame is moved by its driving mechanism, a weight tending torotate the support and the annunciator-sections in a direction contraryto the motion of theframe and an electromagnet to disengagethe motion totake place. 2 In signaling apparatus the combinaof indicating membersthereon, stationary electromagnetic devices for 0 erating selectivelyupon the indicating -mbers of each sections adapt: ed to cooperate withthe indicating members weight-actuated electromagnetically-co'ntrolledstep-by-step driving which the frame is rotated to two subscribingWitnesses.

produce relative motion between the select:

e annunciator= tending to-rotate, the'support and the a'nnuns ofindicating ciator-sections in adirectio'n-contrary to the motion of theframe and an electromagnet to disengage the pawl from the ratchetteethto allow such motion to take place.

In testimony whereofwe have signed our names to this pecificatio'nin thepresence of H AROLI) GILBERT BROWN. 1 ERNESTDE MERINDOL MALAN.

Witnesses.

HARRY B. BRIDGE, ARoHD. J. FRENCH.

25 L is moved by its drivingsmechanism, a weight

